/* Copyright (c) 2010 Fabian Kulman
* 
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* 
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
* 
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/

#ifndef SPACE
#define SPACE

#include "chain.h"

struct drawSpaceOptions {
	int drawHash;
	int drawBBs;
	GLfloat scaleFactor; 
};

class Space{

public:
	int ticks;

	Chain* chain;
	cpSpace* activeSpace;
	cpBody* mouseBody;

	cpVect mousePoint;
	cpVect oldMousePoint;

	Space( std::vector<cpFloat>* input );
	~Space();

	void updateSpace(int ticks);
	void destroySpace(void);

	// Drawing
	void drawSpace(cpSpace* activeSpace, drawSpaceOptions* options);
	void drawSpatialHash(cpSpaceHash *hash);
	inline cpHashValue hash_func(cpHashValue x, cpHashValue y, cpHashValue n);

	/* 
	* Copyright (c) 2007 Scott Lembcke (MIT License)
	*/
	static void Space::drawBB(void *ptr, void *unused){
		cpShape *shape = (cpShape *)ptr;

		glBegin(GL_LINE_LOOP); {
			glVertex2f(shape->bb.l, shape->bb.b);
			glVertex2f(shape->bb.l, shape->bb.t);
			glVertex2f(shape->bb.r, shape->bb.t);
			glVertex2f(shape->bb.r, shape->bb.b);
		} glEnd();
	}

	/* 
	* Copyright (c) 2007 Scott Lembcke (MIT License)
	*/
	static void Space::drawCollisions(void *ptr, void *data){
		cpArbiter *arb = (cpArbiter *)ptr;
		for(int i=0; i<arb->numContacts; i++){
			cpVect v = arb->contacts[i].p;
			glVertex2f(v.x, v.y);
		}
	}
};

#endif